1285028 has 12 divisors (see below), whose sum is σ = 2271360. Its totient is φ = 636072.

The previous prime is 1285021. The next prime is 1285049. The reversal of 1285028 is 8205821.

It is a junction number, because it is equal to n+sod(n) for n = 1284988 and 1285006.

It is not an unprimeable number, because it can be changed into a prime (1285021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148 + ... + 1971.

It is an arithmetic number, because the mean of its divisors is an integer number (189280).

2^1285028 is an apocalyptic number.

It is an amenable number.

1285028 is a deficient number, since it is larger than the sum of its proper divisors (986332).

1285028 is a wasteful number, since it uses less digits than its factorization.

1285028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1285028 is about 1133.5907550787. The cubic root of 1285028 is about 108.7186865409.

The spelling of 1285028 in words is "one million, two hundred eighty-five thousand, twenty-eight".